Since the repo has no screenshots here’s a water level: https://lemmy.kya.moe/imgproxy?src=lemmy.ml%2fpictrs/image/69ffe490-5809-452a-8843-ae99d143acb7.png
Out of the water you have wall jumps, slide jumps and overall some nice feeling movement/controls.
I won’t lie, I got excited for a moment there because I thought that it was actually a gameboy advance game.